Define kustomize config for Cilium inlcuding an L2 load balancer pool (#8)

Co-authored-by: Marcel Straub <m@straubs.eu>
Reviewed-on: #8

02-k8s/infra/network/cilium/announce.yaml

@@ -0,0 +1,8 @@
+apiVersion: cilium.io/v2alpha1
+kind: CiliumL2AnnouncementPolicy
+metadata:
+  name: default-l2-announcement-policy
+  namespace: kube-system
+spec:
+  externalIPs: true
+  loadBalancerIPs: true

02-k8s/infra/network/cilium/ip-pool.yaml

@@ -0,0 +1,8 @@
+apiVersion: cilium.io/v2
+kind: CiliumLoadBalancerIPPool
+metadata:
+  name: internal-v4
+spec:
+  blocks:
+    - start: 10.51.10.64
+      stop: 10.51.10.71

02-k8s/infra/network/cilium/kustomization.yaml

@@ -0,0 +1,15 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - announce.yaml
+  - ip-pool.yaml
+
+helmCharts:
+  - name: cilium
+    repo: https://helm.cilium.io
+    version: 1.18.0 # renovate: github-releases=cilium/cilium
+    releaseName: "cilium"
+    includeCRDs: true
+    namespace: kube-system
+    valuesFile: values.yaml